I believe that's it. Fox really screwed the pooch with Firefly. Great show, great cast, and due to showing much of the show during baseball season, many markets wound up showing episodes out of order, which really screwed things up, and the show was cancelled before the first season had even ended.
If you get a chance, it's well worth watching, but while it resonated with a lot of people, there were also some people who just never "got it."
The first episode, Serenity (not to be confused with the movie), a 2 hour "pilot" (which Fox nixed, demanding a second "pilot, "The Train Job") is really terrific, and quickly brings you up to speed on the Firefly universe. Throughout the season, you'll learn about all the characters, but Joss Wheedon purposely left a lot out, making the characters even more interesting. The cast was incredible.
Mark
There is an excellent study by Art DeVaney showing that media executives have no idea what will or will not be a hit. The really blew it with Firefly, but I suspect they got paid anyway.